java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/product-lines/elevator_spec1_product18.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 23:02:54,699 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 23:02:54,701 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 23:02:54,718 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 23:02:54,718 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 23:02:54,720 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 23:02:54,722 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 23:02:54,731 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 23:02:54,734 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 23:02:54,735 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 23:02:54,736 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 23:02:54,738 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 23:02:54,739 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 23:02:54,742 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 23:02:54,744 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 23:02:54,746 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 23:02:54,748 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 23:02:54,750 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 23:02:54,752 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 23:02:54,757 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 23:02:54,761 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 23:02:54,765 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 23:02:54,767 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 23:02:54,768 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 23:02:54,771 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 23:02:54,771 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 23:02:54,772 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 23:02:54,773 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 23:02:54,774 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 23:02:54,776 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 23:02:54,776 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 23:02:54,778 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 23:02:54,779 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 23:02:54,779 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 23:02:54,781 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 23:02:54,781 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 23:02:54,782 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 23:02:54,782 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 23:02:54,782 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 23:02:54,783 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 23:02:54,784 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 23:02:54,785 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 23:02:54,818 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 23:02:54,818 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 23:02:54,824 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 23:02:54,824 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 23:02:54,824 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 23:02:54,825 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 23:02:54,825 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 23:02:54,825 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 23:02:54,825 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 23:02:54,826 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 23:02:54,826 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 23:02:54,826 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 23:02:54,828 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 23:02:54,828 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 23:02:54,828 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 23:02:54,828 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 23:02:54,829 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 23:02:54,829 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 23:02:54,829 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 23:02:54,829 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 23:02:54,830 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 23:02:54,830 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 23:02:54,830 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 23:02:54,830 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 23:02:54,831 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 23:02:54,831 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 23:02:54,831 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 23:02:54,831 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 23:02:54,831 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-13 23:02:55,149 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 23:02:55,162 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 23:02:55,166 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 23:02:55,167 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 23:02:55,168 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 23:02:55,169 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec1_product18.cil.c [2019-10-13 23:02:55,245 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6149c0d24/654971d728a5452f906a17b7f5bd5655/FLAG97cfdc336 [2019-10-13 23:02:55,916 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 23:02:55,917 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec1_product18.cil.c [2019-10-13 23:02:55,942 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6149c0d24/654971d728a5452f906a17b7f5bd5655/FLAG97cfdc336 [2019-10-13 23:02:56,113 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6149c0d24/654971d728a5452f906a17b7f5bd5655 [2019-10-13 23:02:56,122 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 23:02:56,123 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 23:02:56,124 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 23:02:56,125 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 23:02:56,128 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 23:02:56,128 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:02:56" (1/1) ... [2019-10-13 23:02:56,131 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f9fd9b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:02:56, skipping insertion in model container [2019-10-13 23:02:56,131 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:02:56" (1/1) ... [2019-10-13 23:02:56,137 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 23:02:56,220 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 23:02:56,981 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:02:57,007 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 23:02:57,101 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:02:57,169 INFO L192 MainTranslator]: Completed translation [2019-10-13 23:02:57,169 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:02:57 WrapperNode [2019-10-13 23:02:57,169 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 23:02:57,170 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 23:02:57,170 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 23:02:57,171 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 23:02:57,185 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:02:57" (1/1) ... [2019-10-13 23:02:57,185 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:02:57" (1/1) ... [2019-10-13 23:02:57,217 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:02:57" (1/1) ... [2019-10-13 23:02:57,217 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:02:57" (1/1) ... [2019-10-13 23:02:57,305 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:02:57" (1/1) ... [2019-10-13 23:02:57,356 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:02:57" (1/1) ... [2019-10-13 23:02:57,380 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:02:57" (1/1) ... [2019-10-13 23:02:57,397 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 23:02:57,398 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 23:02:57,398 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 23:02:57,398 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 23:02:57,399 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:02:57" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 23:02:57,472 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 23:02:57,472 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 23:02:57,472 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 23:02:57,472 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 23:02:57,473 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-13 23:02:57,473 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-13 23:02:57,473 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-13 23:02:57,473 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-13 23:02:57,474 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-13 23:02:57,474 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-13 23:02:57,474 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-13 23:02:57,474 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-13 23:02:57,475 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 23:02:57,475 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 23:02:57,475 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 23:02:57,475 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 23:02:57,476 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 23:02:57,476 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 23:02:57,476 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2019-10-13 23:02:57,476 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__2 [2019-10-13 23:02:57,477 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__3 [2019-10-13 23:02:57,477 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__4 [2019-10-13 23:02:57,477 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-13 23:02:57,477 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-13 23:02:57,478 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-13 23:02:57,478 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-13 23:02:57,478 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-13 23:02:57,478 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-13 23:02:57,478 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-13 23:02:57,478 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-13 23:02:57,479 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-13 23:02:57,479 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-13 23:02:57,479 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-13 23:02:57,479 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-13 23:02:57,479 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-13 23:02:57,479 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-13 23:02:57,480 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-13 23:02:57,480 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-13 23:02:57,480 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-13 23:02:57,480 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-13 23:02:57,480 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-13 23:02:57,481 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-13 23:02:57,481 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-13 23:02:57,481 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-13 23:02:57,481 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__weight [2019-10-13 23:02:57,481 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-13 23:02:57,481 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__wrappee__weight [2019-10-13 23:02:57,482 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-13 23:02:57,482 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-13 23:02:57,482 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-13 23:02:57,482 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-13 23:02:57,482 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-13 23:02:57,482 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-13 23:02:57,483 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-13 23:02:57,483 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 23:02:57,483 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 23:02:57,483 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 23:02:57,483 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 23:02:57,483 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 23:02:57,484 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-13 23:02:57,484 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-13 23:02:57,484 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-13 23:02:57,484 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-13 23:02:57,484 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-13 23:02:57,485 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-13 23:02:57,485 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-13 23:02:57,485 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-13 23:02:57,485 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-13 23:02:57,485 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-13 23:02:57,485 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-13 23:02:57,486 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-13 23:02:57,486 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-13 23:02:57,486 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-13 23:02:57,486 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 23:02:57,486 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-13 23:02:57,487 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 23:02:57,487 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 23:02:57,487 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 23:02:57,487 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 23:02:57,487 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-13 23:02:57,488 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-13 23:02:57,488 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-13 23:02:57,488 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-13 23:02:57,488 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-13 23:02:57,488 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-13 23:02:57,488 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-13 23:02:57,489 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-13 23:02:57,489 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__2 [2019-10-13 23:02:57,489 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 23:02:57,489 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 23:02:57,489 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 23:02:57,490 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 23:02:57,490 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 23:02:57,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 23:02:57,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 23:02:57,490 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 23:02:57,491 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 23:02:57,491 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 23:02:57,491 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 23:02:57,491 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 23:02:57,491 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 23:02:57,492 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 23:02:57,492 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 23:02:57,492 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 23:02:57,492 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 23:02:57,492 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-13 23:02:57,492 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-13 23:02:57,493 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2019-10-13 23:02:57,493 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__3 [2019-10-13 23:02:57,493 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__4 [2019-10-13 23:02:57,493 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 23:02:57,493 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-13 23:02:57,493 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-13 23:02:57,494 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-13 23:02:57,494 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-13 23:02:57,494 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-13 23:02:57,494 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-13 23:02:57,494 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-13 23:02:57,495 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-13 23:02:57,495 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-13 23:02:57,495 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-13 23:02:57,495 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-13 23:02:57,495 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-13 23:02:57,495 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-13 23:02:57,496 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-13 23:02:57,496 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-13 23:02:57,496 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-13 23:02:57,496 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-13 23:02:57,496 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-13 23:02:57,496 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-13 23:02:57,497 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-13 23:02:57,497 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-13 23:02:57,497 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-13 23:02:57,497 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-13 23:02:57,497 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-13 23:02:57,498 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__weight [2019-10-13 23:02:57,498 INFO L130 BoogieDeclarations]: Found specification of procedure printState__wrappee__weight [2019-10-13 23:02:57,498 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-13 23:02:57,498 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-13 23:02:57,498 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-13 23:02:57,499 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-13 23:02:57,499 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 23:02:57,499 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 23:02:57,499 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 23:02:57,499 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 23:02:57,499 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-13 23:02:57,500 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-13 23:02:57,500 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-13 23:02:57,500 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 23:02:57,500 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 23:02:57,500 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-13 23:02:57,501 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-13 23:02:57,501 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-13 23:02:57,501 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-13 23:02:57,501 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-13 23:02:57,501 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-13 23:02:57,501 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-13 23:02:57,501 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-13 23:02:57,502 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-13 23:02:57,502 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-13 23:02:57,502 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-13 23:02:57,502 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 23:02:57,502 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-13 23:02:57,502 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 23:02:57,503 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 23:02:57,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 23:02:57,503 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 23:03:02,578 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 23:03:02,578 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-13 23:03:02,580 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:03:02 BoogieIcfgContainer [2019-10-13 23:03:02,580 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 23:03:02,581 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 23:03:02,581 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 23:03:02,585 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 23:03:02,585 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 11:02:56" (1/3) ... [2019-10-13 23:03:02,586 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45aedb63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:03:02, skipping insertion in model container [2019-10-13 23:03:02,586 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:02:57" (2/3) ... [2019-10-13 23:03:02,587 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45aedb63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:03:02, skipping insertion in model container [2019-10-13 23:03:02,587 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:03:02" (3/3) ... [2019-10-13 23:03:02,588 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product18.cil.c [2019-10-13 23:03:02,599 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 23:03:02,608 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 23:03:02,620 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 23:03:02,653 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 23:03:02,654 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 23:03:02,654 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 23:03:02,654 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 23:03:02,654 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 23:03:02,654 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 23:03:02,654 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 23:03:02,654 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 23:03:02,688 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states. [2019-10-13 23:03:02,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2019-10-13 23:03:02,704 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:03:02,705 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:03:02,708 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:03:02,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:03:02,715 INFO L82 PathProgramCache]: Analyzing trace with hash -1941866427, now seen corresponding path program 1 times [2019-10-13 23:03:02,725 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:03:02,726 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994523181] [2019-10-13 23:03:02,726 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:02,726 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:02,726 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:03:03,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:03:03,591 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-13 23:03:03,592 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994523181] [2019-10-13 23:03:03,593 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:03:03,594 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 23:03:03,594 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614473495] [2019-10-13 23:03:03,601 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 23:03:03,601 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:03:03,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 23:03:03,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 23:03:03,621 INFO L87 Difference]: Start difference. First operand 558 states. Second operand 2 states. [2019-10-13 23:03:03,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:03:03,736 INFO L93 Difference]: Finished difference Result 461 states and 690 transitions. [2019-10-13 23:03:03,736 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 23:03:03,738 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 97 [2019-10-13 23:03:03,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:03:03,777 INFO L225 Difference]: With dead ends: 461 [2019-10-13 23:03:03,777 INFO L226 Difference]: Without dead ends: 427 [2019-10-13 23:03:03,788 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 23:03:03,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2019-10-13 23:03:03,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 427. [2019-10-13 23:03:03,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 427 states. [2019-10-13 23:03:03,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 639 transitions. [2019-10-13 23:03:03,935 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 639 transitions. Word has length 97 [2019-10-13 23:03:03,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:03:03,939 INFO L462 AbstractCegarLoop]: Abstraction has 427 states and 639 transitions. [2019-10-13 23:03:03,939 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 23:03:03,939 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 639 transitions. [2019-10-13 23:03:03,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2019-10-13 23:03:03,953 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:03:03,953 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:03:03,954 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:03:03,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:03:03,955 INFO L82 PathProgramCache]: Analyzing trace with hash 1144477141, now seen corresponding path program 1 times [2019-10-13 23:03:03,955 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:03:03,955 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303251394] [2019-10-13 23:03:03,955 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:03,956 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:03,956 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:03:04,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:03:04,345 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-13 23:03:04,346 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303251394] [2019-10-13 23:03:04,347 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:03:04,348 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-13 23:03:04,348 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104612905] [2019-10-13 23:03:04,350 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 23:03:04,350 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:03:04,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 23:03:04,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-10-13 23:03:04,351 INFO L87 Difference]: Start difference. First operand 427 states and 639 transitions. Second operand 9 states. [2019-10-13 23:03:09,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:03:09,957 INFO L93 Difference]: Finished difference Result 1142 states and 1751 transitions. [2019-10-13 23:03:09,958 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-10-13 23:03:09,958 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 98 [2019-10-13 23:03:09,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:03:09,968 INFO L225 Difference]: With dead ends: 1142 [2019-10-13 23:03:09,968 INFO L226 Difference]: Without dead ends: 768 [2019-10-13 23:03:09,977 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=369, Unknown=0, NotChecked=0, Total=462 [2019-10-13 23:03:09,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 768 states. [2019-10-13 23:03:10,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 768 to 737. [2019-10-13 23:03:10,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 737 states. [2019-10-13 23:03:10,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 737 states to 737 states and 1094 transitions. [2019-10-13 23:03:10,036 INFO L78 Accepts]: Start accepts. Automaton has 737 states and 1094 transitions. Word has length 98 [2019-10-13 23:03:10,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:03:10,036 INFO L462 AbstractCegarLoop]: Abstraction has 737 states and 1094 transitions. [2019-10-13 23:03:10,037 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 23:03:10,037 INFO L276 IsEmpty]: Start isEmpty. Operand 737 states and 1094 transitions. [2019-10-13 23:03:10,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2019-10-13 23:03:10,039 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:03:10,039 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:03:10,039 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:03:10,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:03:10,040 INFO L82 PathProgramCache]: Analyzing trace with hash -580814009, now seen corresponding path program 1 times [2019-10-13 23:03:10,040 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:03:10,040 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680145164] [2019-10-13 23:03:10,041 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:10,041 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:10,041 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:03:10,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:03:10,235 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-13 23:03:10,235 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680145164] [2019-10-13 23:03:10,235 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:03:10,236 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 23:03:10,236 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495204847] [2019-10-13 23:03:10,236 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:03:10,237 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:03:10,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:03:10,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:03:10,237 INFO L87 Difference]: Start difference. First operand 737 states and 1094 transitions. Second operand 3 states. [2019-10-13 23:03:10,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:03:10,358 INFO L93 Difference]: Finished difference Result 2097 states and 3165 transitions. [2019-10-13 23:03:10,359 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:03:10,359 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 99 [2019-10-13 23:03:10,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:03:10,373 INFO L225 Difference]: With dead ends: 2097 [2019-10-13 23:03:10,374 INFO L226 Difference]: Without dead ends: 1415 [2019-10-13 23:03:10,379 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:03:10,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1415 states. [2019-10-13 23:03:10,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1415 to 1408. [2019-10-13 23:03:10,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1408 states. [2019-10-13 23:03:10,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1408 states to 1408 states and 2116 transitions. [2019-10-13 23:03:10,481 INFO L78 Accepts]: Start accepts. Automaton has 1408 states and 2116 transitions. Word has length 99 [2019-10-13 23:03:10,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:03:10,482 INFO L462 AbstractCegarLoop]: Abstraction has 1408 states and 2116 transitions. [2019-10-13 23:03:10,482 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:03:10,482 INFO L276 IsEmpty]: Start isEmpty. Operand 1408 states and 2116 transitions. [2019-10-13 23:03:10,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2019-10-13 23:03:10,484 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:03:10,485 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:03:10,485 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:03:10,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:03:10,485 INFO L82 PathProgramCache]: Analyzing trace with hash -825660218, now seen corresponding path program 1 times [2019-10-13 23:03:10,485 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:03:10,486 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783382829] [2019-10-13 23:03:10,486 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:10,486 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:10,486 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:03:10,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:03:10,876 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-13 23:03:10,877 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783382829] [2019-10-13 23:03:10,877 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:03:10,877 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 23:03:10,877 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836157827] [2019-10-13 23:03:10,878 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 23:03:10,878 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:03:10,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 23:03:10,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-13 23:03:10,879 INFO L87 Difference]: Start difference. First operand 1408 states and 2116 transitions. Second operand 6 states. [2019-10-13 23:03:14,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:03:14,123 INFO L93 Difference]: Finished difference Result 4505 states and 6913 transitions. [2019-10-13 23:03:14,124 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-13 23:03:14,124 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 100 [2019-10-13 23:03:14,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:03:14,154 INFO L225 Difference]: With dead ends: 4505 [2019-10-13 23:03:14,154 INFO L226 Difference]: Without dead ends: 3153 [2019-10-13 23:03:14,162 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2019-10-13 23:03:14,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3153 states. [2019-10-13 23:03:14,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3153 to 2842. [2019-10-13 23:03:14,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2842 states. [2019-10-13 23:03:14,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2842 states to 2842 states and 4359 transitions. [2019-10-13 23:03:14,485 INFO L78 Accepts]: Start accepts. Automaton has 2842 states and 4359 transitions. Word has length 100 [2019-10-13 23:03:14,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:03:14,486 INFO L462 AbstractCegarLoop]: Abstraction has 2842 states and 4359 transitions. [2019-10-13 23:03:14,486 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 23:03:14,486 INFO L276 IsEmpty]: Start isEmpty. Operand 2842 states and 4359 transitions. [2019-10-13 23:03:14,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2019-10-13 23:03:14,491 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:03:14,492 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:03:14,492 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:03:14,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:03:14,493 INFO L82 PathProgramCache]: Analyzing trace with hash -821262406, now seen corresponding path program 1 times [2019-10-13 23:03:14,493 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:03:14,494 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453296131] [2019-10-13 23:03:14,495 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:14,495 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:14,495 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:03:14,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:03:14,816 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-13 23:03:14,816 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453296131] [2019-10-13 23:03:14,817 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:03:14,817 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 23:03:14,817 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969989977] [2019-10-13 23:03:14,818 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 23:03:14,819 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:03:14,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 23:03:14,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-13 23:03:14,821 INFO L87 Difference]: Start difference. First operand 2842 states and 4359 transitions. Second operand 8 states. [2019-10-13 23:03:15,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:03:15,132 INFO L93 Difference]: Finished difference Result 6001 states and 9352 transitions. [2019-10-13 23:03:15,133 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-13 23:03:15,133 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 126 [2019-10-13 23:03:15,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:03:15,163 INFO L225 Difference]: With dead ends: 6001 [2019-10-13 23:03:15,163 INFO L226 Difference]: Without dead ends: 3218 [2019-10-13 23:03:15,177 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-13 23:03:15,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3218 states. [2019-10-13 23:03:15,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3218 to 2874. [2019-10-13 23:03:15,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2874 states. [2019-10-13 23:03:15,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2874 states to 2874 states and 4391 transitions. [2019-10-13 23:03:15,446 INFO L78 Accepts]: Start accepts. Automaton has 2874 states and 4391 transitions. Word has length 126 [2019-10-13 23:03:15,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:03:15,450 INFO L462 AbstractCegarLoop]: Abstraction has 2874 states and 4391 transitions. [2019-10-13 23:03:15,450 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 23:03:15,450 INFO L276 IsEmpty]: Start isEmpty. Operand 2874 states and 4391 transitions. [2019-10-13 23:03:15,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2019-10-13 23:03:15,461 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:03:15,461 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:03:15,465 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:03:15,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:03:15,467 INFO L82 PathProgramCache]: Analyzing trace with hash 1069297882, now seen corresponding path program 1 times [2019-10-13 23:03:15,467 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:03:15,467 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872243605] [2019-10-13 23:03:15,467 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:15,468 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:15,468 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:03:15,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:03:15,821 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-13 23:03:15,824 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872243605] [2019-10-13 23:03:15,825 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:03:15,825 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-13 23:03:15,826 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666913178] [2019-10-13 23:03:15,827 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-13 23:03:15,828 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:03:15,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-13 23:03:15,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-13 23:03:15,828 INFO L87 Difference]: Start difference. First operand 2874 states and 4391 transitions. Second operand 12 states. [2019-10-13 23:03:22,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:03:22,536 INFO L93 Difference]: Finished difference Result 8568 states and 13108 transitions. [2019-10-13 23:03:22,537 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2019-10-13 23:03:22,537 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 129 [2019-10-13 23:03:22,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:03:22,583 INFO L225 Difference]: With dead ends: 8568 [2019-10-13 23:03:22,584 INFO L226 Difference]: Without dead ends: 5749 [2019-10-13 23:03:22,601 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=156, Invalid=836, Unknown=0, NotChecked=0, Total=992 [2019-10-13 23:03:22,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5749 states. [2019-10-13 23:03:22,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5749 to 5647. [2019-10-13 23:03:22,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5647 states. [2019-10-13 23:03:22,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5647 states to 5647 states and 8550 transitions. [2019-10-13 23:03:22,936 INFO L78 Accepts]: Start accepts. Automaton has 5647 states and 8550 transitions. Word has length 129 [2019-10-13 23:03:22,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:03:22,937 INFO L462 AbstractCegarLoop]: Abstraction has 5647 states and 8550 transitions. [2019-10-13 23:03:22,937 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-13 23:03:22,937 INFO L276 IsEmpty]: Start isEmpty. Operand 5647 states and 8550 transitions. [2019-10-13 23:03:22,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2019-10-13 23:03:22,940 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:03:22,940 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:03:22,940 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:03:22,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:03:22,941 INFO L82 PathProgramCache]: Analyzing trace with hash -750649053, now seen corresponding path program 1 times [2019-10-13 23:03:22,941 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:03:22,941 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248218297] [2019-10-13 23:03:22,941 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:22,942 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:22,942 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:03:23,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:03:23,309 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-13 23:03:23,310 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248218297] [2019-10-13 23:03:23,310 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:03:23,310 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 23:03:23,311 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545204781] [2019-10-13 23:03:23,312 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 23:03:23,313 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:03:23,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 23:03:23,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 23:03:23,314 INFO L87 Difference]: Start difference. First operand 5647 states and 8550 transitions. Second operand 7 states. [2019-10-13 23:03:26,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:03:26,803 INFO L93 Difference]: Finished difference Result 14047 states and 21312 transitions. [2019-10-13 23:03:26,804 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-10-13 23:03:26,804 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 130 [2019-10-13 23:03:26,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:03:26,859 INFO L225 Difference]: With dead ends: 14047 [2019-10-13 23:03:26,859 INFO L226 Difference]: Without dead ends: 8459 [2019-10-13 23:03:26,890 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2019-10-13 23:03:26,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8459 states.